Within the circle grinding tool spindle technology requirements and function

1 two supporting shaft neck spindle bearing shaft neck of A and B roundness tolerance is 0. 003 mm, the radial run-out tolerance is 0. 005mm； The supporting shaft neck 1:12 cone contact rate of 70% or higher; The surface roughness Ra of 0. 2 m； Supporting shaft neck size precision IT5. For spindle bearing journal is used to support bearing installation, is the assembling of the parts of a spindle datum, the manufacturing precision of it directly affects the spindle rotation accuracy of parts. 2 end cone hole area at spindle end taper hole ( Morse. 2) Beating of supporting shaft neck of A and B in the shaft end surface tolerance is zero. 005 mm and 300 mm from the shaft end of tolerance to 0. 01 mm； Cone contact rate 70% or higher; The surface roughness Ra of 0. 4 m； 45 ~ 50 HRC hardness requirements. The taper shank taper hole is used to install the top or tools, its axis must be with the two supporting shaft neck axis coaxial strictly, otherwise it will make the artifacts ( Or tools) Alignment error is produced. 3 end short cone and end face short head cone and end face D C on two main shaft bearing journal A and B of the radial circular run-out tolerance is zero. 008mm； The surface roughness Ra of 0. 8 m。 It is to install chuck locating surface. In order to guarantee the centering precision of the chuck, the conical surface must be with the supporting shaft neck coaxial, and must end with the rotary center of the spindle vertical. 4 the empty sets of gear shaft neck sets of gear shaft neck of supporting shaft neck of A and B radial circular run-out tolerance of 0. 015 mm。 Since the journal is to match the gear hole surface, the supporting shaft neck should have certain alignment requirements, otherwise will cause poor spindle drive meshing, when the spindle speed is very high, can also affect the gear transmission stability and noise. 5 thread on the surface of the screw on the spindle error is one of the causes of the gland nut end face to beat, so should be controlled thread machining accuracy. When the main shaft gland nut on the face runout is too large, will cause the pressure of the roller bearing inner ring tilt axis, thus caused the spindle radial circular runout.